Great site. I had seen it before but have expored it more now. Great stuff!
I was thinking of the bullion patches recently on ebay. I was comparing them with repro ones on sale at the same time and there were several differences, the tarnished ones being finer in the work. I asked the dealer for a scan of the front and back (front here as the whole scan was too large to upload)
One thing about them was that they were not a 'pair', in that the badges both faced the same way. But they had stitching holes around them and look better than any repros I have seen elsewhere. Also, they are not on blue/grey of course, another reason why I wondered if they might have been worn on the US uniform. If they are repro, someone has done a lot of work on the tarnishing!
On another topic, I used to go to a collectors fair in London about 20 years ago and one of the dealers there I recall having an original A2 with a lovely painted (and original) ES badge on the sleeve.